Products Description

Revolutionizing Construction: The Ultimate Guide to Polyurethane (PU) Sandwich Panels

Polyurethane (PU) Sandwich Panels represent the cutting-edge of modern building technology, serving as a versatile solution for roofing, wall cladding, and interior divisions. Renowned for their ability to merge robust structural integrity with superior thermal management, these panels have become the industry standard for architects and engineers focused on efficiency and longevity.

Specification

Product Name	PU/PIR Sandwich Roof Panel
Thickness of panels	30/50/75/80/100/120/150mm
Core material	PU/PIR
Thermal conductivity of PU/PIR	≤0.0195w/(m. k)
Density of core material	40-45 KG/M3
Height of major rib	40mm
Thickness of Exterior/ interior face	0.3-0.8 mm
Effective width	1000 mm
Length of panel	Max.11.8 meters
Color of steel plate	RAL Color
Painting	Polyester PE/SMP/HDP/PVDF coating etc.
Coating	Hot dip zine coating,hot dip aluminum-zin coated
Connection	tongue and grouve with hidden screw Joint

Architectural Composition

Dual-Skin Facings: The exterior and interior surfaces are engineered using premium metallic substrates, such as galvanized steel, pre-painted aluminum, or color-bonded steel.

High-Density Core: Sandwiched between the metal sheets is a rigid polyurethane (PU) foam core. This material is chemically injected and cured under intense pressure, creating a monolithic bond with the facings.

Unmatched Performance Characteristics

PU Sandwich Panels distinguish themselves through a suite of technical advantages that address the most demanding construction challenges:

Superior Thermal Efficiency: Boasting an ultra-low thermal conductivity rating (reaching levels of 0.022 W/(m·K)), the PU core acts as a thermal barrier. This minimizes the transfer of heat, drastically lowering the energy required for HVAC systems and positioning the building for eco-friendly certifications.

Structural Resilience: These panels achieve the perfect balance of being featherlight (averaging just 10–15 kg/m²) and incredibly strong. The metal skins provide a rigid frame that grants high load-bearing capabilities, ensuring the structure remains intact and undamaged under heavy snow loads, high winds, or physical impact.

Advanced Moisture Defense: The impermeable closed-cell nature of the foam ensures zero water absorption. When combined with the seamless adhesion between the core and the metal facings, this eliminates the risk of leaks entirely, making the panels the safest choice for roofs and moisture-prone facilities like aquatic centers.

Acoustic Isolation: The dense cellular structure of the polyurethane core effectively dampens sound waves, significantly reducing noise pollution between rooms. This acoustic performance is a critical feature for sensitive environments like healthcare facilities and educational institutions.

Fire Safety Compliance: Depending on the application, the core can be formulated with flame-retardant additives to meet strict safety classifications (such as B1 or B2). For environments with extreme fire risks, hybrid solutions-combining the rigidity of PU with the fire resistance of rock wool-are also available.